The five landform regions that make up the United States are the West, Midwest, Northeast, Southwest and Southeast regions. The states that comprise these individual regions are grouped according to their locations on the continent, as well as the major physical features and climatic conditions that are common in these areas. Continue Reading.
In 1845, America tried buying huge parts of Mexican land that included present day California and New Mexico. When Mexico refused to part with its land, America tried using force. Mexico and America both maintained that the border was theirs. This led to the beginning of the Mexican America War that would last for two years (1846-48). America won the war decisively. Mexico had to give up California, New Mexico, Utah, Nevada and parts of Colorado, Wyoming and Arizona.
Why Did The Mexican War Start ? When Mexico became independent in 1821, a large number of Americans living closer to the borders started migrating towards Texas which was a part of Mexico before the beginning of the Mexican American War.